Robert W. Knecht and Wynne Calvert look at a computer at the National Bureau of Standards in Boulder, Colorado. It has gauges, knobs, buttons, toggle switches, metal tape reels, speakers, and a hand-held microphone. Printed words on it read: "time...

View of the Oberlin Land Office (Calvert & Stephens) and Government Land Office, in Cripple Creek (Teller County), Colorado; lettering reads: "J. R. McCoun, Atty-at-Law," and "J. R. McCoun Land Office;" men pose in front of the false front...